[SR-Users] Need an explanation of the contents of the LCR gw_uri_avp for replacement I am making to some of the functionality of the LCR module

[Will Ferrer]

Hi Juha

Thanks much for the assistance. I have refactored our LCR to work based on
my own mysql query, where I am setting the gw_index as the id of the
gateway, and the ip address I am putting in as a raw ip.

It is all working as far as I can tell but more testing will be in order
for us. If I find any issues or gotcha I will post here just to let every
one know.

I hope this message finds you well.

All the best.

Will Ferrer


On Tue, Apr 29, 2014 at 9:06 AM, Juha Heinanen <jh at tutpro.com> wrote:

> Will Ferrer writes:
>
> > gw_index | scheme | strip | prefix | tag | ip_addr | hostname | port |
> > params | transport | flags
> >
> > Most of these things are clearly retrievable from the DB (just look at
> the
> > lcr_gw table and you will see the values there) but I found 2 things
> worthy
> > of note:
> >
> > 1) gw_index: this seems that it can be any number that is unique inside
> the
> > avp, when I tried reconstructing this avp I used just 1 and 2 for my test
> > entries and this worked.
>
> gw_index is index of the gateway in internal table that contains matched
> gws after load_gw() call.
>
> > 2) ip_addr: There is some interesting munging that happens with in the c
> > code to encode this value, however I found that when I over wrote the
> > values of the avp manually I didn't need to do the munging -- just
> putting
> > an ip address in this space worked fine.
>
> ip_addr string is produced for ipv4 like this:
>
> string = int2str(ip_addr->u.addr32[0], &len);
>
> -- juha
>
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